android 用httpClient和HttpUrlConnection上传文件

HttpClient上传文件用到httpmime-4.1.3.jar,直接上代码

String url = "http://192.168.2.12:8080/UploadFile/default/uploadFile.action";
MultipartEntity entity = new MultipartEntity();
FileBody body = new FileBody(new File("/mnt/sdcard/test2.apk"));
entity.addPart("file", body);
entity.addPart("fileFileName", new StringBody("test2.apk", Charset.forName("utf-8")));

HttpPost post = new HttpPost(url);
post.setEntity(entity);

HttpClient client = new DefaultHttpClient();
HttpResponse response = client.execute(post);
int stateCode = response.getStatusLine().getStatusCode();
if (stateCode == HttpStatus.SC_OK) {
String result  = EntityUtils.toString(response.getEntity());
System.out.println(result);
}

比较简单，上传大文件也没什么问题。
HttpUrlConnection上传比较麻烦点，自己要构造出头文件，这边直接从网上copy的代码，好想是谁的博客里面的，如果有侵权啥的，私聊我，或者让我删除，都可以。代码如下：

public class HttpUrlConnectionUploadFile {

public static String post(String actionUrl, Map<String, String> params, Map<String, File> files) throws IOException {

String BOUNDARY = java.util.UUID.randomUUID().toString();
String PREFIX = "--", LINEND = "\r\n";
String MULTIPART_FROM_DATA = "multipart/form-data";
String CHARSET = "UTF-8";

URL uri = new URL(actionUrl);
HttpURLConnection conn = (HttpURLConnection) uri.openConnection();
conn.setChunkedStreamingMode(0);
conn.setReadTimeout(5 * 1000);
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setUseCaches(false);
conn.setRequestMethod("POST");
conn.setRequestProperty("connection", "keep-alive");
conn.setRequestProperty("Charsert", "UTF-8");
conn.setRequestProperty("Content-Type", MULTIPART_FROM_DATA + ";boundary=" + BOUNDARY);

// 首先组拼文本类型的参数
StringBuilder sb = new StringBuilder();
for (Map.Entry<String, String> entry : params.entrySet()) {
sb.append(PREFIX);
sb.append(BOUNDARY);
sb.append(LINEND);
sb.append("Content-Disposition: form-data; name=\"" + entry.getKey() + "\"" + LINEND);
sb.append("Content-Type: text/plain; charset=" + CHARSET + LINEND);
sb.append("Content-Transfer-Encoding: 8bit" + LINEND);
sb.append(LINEND);
sb.append(entry.getValue());
sb.append(LINEND);
}

DataOutputStream outStream = new DataOutputStream(conn.getOutputStream());
outStream.write(sb.toString().getBytes());
// 发送文件数据
if (files != null)
for (Map.Entry<String, File> file : files.entrySet()) {
StringBuilder sb1 = new StringBuilder();
sb1.append(PREFIX);
sb1.append(BOUNDARY);
sb1.append(LINEND);
sb1.append("Content-Disposition: form-data; name=\"file\"; filename=\"" + file.getKey() + "\"" + LINEND);
sb1.append("Content-Type: application/octet-stream; charset=" + CHARSET + LINEND);
sb1.append(LINEND);
outStream.write(sb1.toString().getBytes());

InputStream is = new FileInputStream(file.getValue());
byte[] buffer = new byte[1024];
int len = 0;
while ((len = is.read(buffer)) != -1) {
outStream.write(buffer, 0, len);
}

is.close();
outStream.write(LINEND.getBytes());
}

// 请求结束标志
byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINEND).getBytes();
outStream.write(end_data);
outStream.flush();
// 得到响应码
int res = conn.getResponseCode();
InputStream in = conn.getInputStream();
if (res == 200) {
int ch;
StringBuilder sb2 = new StringBuilder();
while ((ch = in.read()) != -1) {
sb2.append((char) ch);
}
}
outStream.close();
conn.disconnect();
return in.toString();
}
}

conn.setChunkedStreamingMode(0);强调下，如果不加这句话，android上传大文件的时候，容易出现内存溢出。

服务端我用的是struts2，和android关系不大，也没什么难度，代码就不贴了。

还有就是用socket上传了，http://blog.csdn.net/shimiso/article/details/8529633 这有高手写好了，挺不错的，推荐下。